github.com/cockroachdb/apd/v3@v3.2.0/error_test.go (about)

     1  // Copyright 2016 The Cockroach Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    12  // implied. See the License for the specific language governing
    13  // permissions and limitations under the License.
    14  
    15  package apd
    16  
    17  import "testing"
    18  
    19  // Appease the unused test.
    20  // TODO(mjibson): actually test all the ErrDecimal methods.
    21  func TestErrDecimal(t *testing.T) {
    22  	ed := MakeErrDecimal(testCtx)
    23  	a := New(1, 0)
    24  	ed.Abs(a, a)
    25  	ed.Exp(a, a)
    26  	ed.Ln(a, a)
    27  	ed.Log10(a, a)
    28  	ed.Neg(a, a)
    29  	ed.Pow(a, a, a)
    30  	ed.QuoInteger(a, a, a)
    31  	ed.Rem(a, a, a)
    32  	ed.Round(a, a)
    33  }
    34  
    35  // TestMakeErrDecimalWithPrecision tests that WithPrecision generates a copy
    36  // and not a reference.
    37  func TestMakeErrDecimalWithPrecision(t *testing.T) {
    38  	c := &Context{
    39  		Precision:   5,
    40  		MaxExponent: 2,
    41  	}
    42  	nc := c.WithPrecision(c.Precision * 2)
    43  	ed := MakeErrDecimal(nc)
    44  	if ed.Ctx.Precision != 10 {
    45  		t.Fatalf("expected %d, got %d", 10, ed.Ctx.Precision)
    46  	}
    47  	if c.Precision != 5 {
    48  		t.Fatalf("expected %d, got %d", 5, c.Precision)
    49  	}
    50  	if c.MaxExponent != 2 {
    51  		t.Fatalf("expected %d, got %d", 2, c.MaxExponent)
    52  	}
    53  }